Etymology of the Latin word occipitium
the Latin word occipitium (back of head; back of the head, occiput)
derived from the Latin word occiput (back of the head, occiput)
using the Late Latin prefix ob-
derived from the Latin word caput (head; small head; head; head; head; head; person; life; heading; chapter, principal division)
derived from the Proto-Indo-European root *kaput- (head)
derived from the Latin word ob (before; in the way of)